Sorry I am expecting no here. But cannot help but hope someone knows a way around the limitation.

I have a project where I plan to use an nvme on a waveshare mini b io board.

I am just now learning my way around CM4 pies. So purchased a few parts to experiment before fitting to manage stuff on my boat.

Unfortunately I did not know enough whan I got the dev cm4. Seeing as the cost difference between Emmc and lite was tiny. I decided there was little to lose with getting a Emmc one. Not knowing the EMMC uses the same pin address as the SD slot on io boards.

I now know this will mean the SD card port is not available. As I plan to use that to move software updates.

I was wondering if anyone knows a software way of enabling the internal sd port. IE basically disabling the EMMC.

If not ill just set up with a USB SD reader so all my cm4 can run identical. But if I can use the one on the board. It will be simpler. Maybe have some option to reboot the boat cm4 in either option with an emergency os on the emmc in the event of a fault.